A balloon's envelope is the large fabric holding the gas or hot air. Most hot-air balloons use ripstop nylon or nomex coated with a sealant to reduce the porosity of the material and protect the fabric from heat. The internal temperature of the envelope is usually about 212 degrees Fahrenheit. The top of the envelope is sealed with a 'parachute' which is released after the balloon lands to allow the hot air to escape and deflate the balloon.
The gas container of a balloon or airship or the outer cover surrounding the gas bags.
Often referred to as the balloon; it is the large colorful nylon bag that is filled with air when inflated
A lipoprotein outer layer of enveloped viruses that is derived from the plasma membrane of the host cell.
the fabric portion of the balloon.
The outer lining of an implant that holds the inner fluids.
the bag containing the gas in a balloon
outer protective bulb or jacket of a lamp.
Bag that seals hot air to create buoyancy. Made from lightweight, durable materials such as Tetoron or nylon and can measure up to 17-18m in diameter, and between 20-25m in height. The opening at the bottom into which hot air is blown, is made from non-combustible fibres. (Gore, Rip Panel)
The outer covering of a virus, sometimes called the coat.
the outer covering of a virus. The HIV envelope contains spikes and is composed of 2 protein subunits -- gp120 and gp41 -- encoded by the env gene. The glycoprotein gp120 attaches itself to the CD4 surface protein, allowing HIV to infect certain cells.
The outer lining of an implant which traps the inner fluids, sealing them in.
A lipoprotein membrane that surrounds the nucleocapsid (nucleic acid and capsid) of some viruses.
the lipid or glycoprotein membrane that forms the outer shell of some viruses.
The outer lining of an implant which traps the inner filling, sealing it in.
In virology, a protein covering that packages the virus's genetic information. The outer coat, or envelope, of HIV is composed of two layers of fat-like molecules called lipids taken from the membranes of human cells. Embedded in the envelope are numerous cellular proteins, as well as mushroom-shaped HIV proteins that protrude from the surface. Each mushroom is thought to consist of a cap made of four glycoprotein molecules called gp120, and a stem consisting of four gp41 molecules embedded in the envelope. The virus uses these proteins to attach to and infect cells.
A continuous seal for preventing bitumen from leaking down into or off a building. Is constructed by extending the base sheet or other non-porous ply of felt beyond the edge of the field plies. It is then turned back onto the top of the system and adhered. See also Bitumen-Stop.
Outer surface of a virus, also called the coat. Not all viruses have an envelope. (See virus; env.)
Outer surface of a virus, also called the coat. Not all viruses have an envelope. Also, see Viral Envelope.
The fabric that keeps gas inside a balloon or airship. As a balloon rises, the air pressure surrounding the envelope lessens, and so the gas trapped inside tends to expand. Unless this pressure is released through a valve, the envelope will tear.
A lipid membrane enveloping a virus particle.
(Bitumen-Stop): a continuous edge seal formed at the perimeter and at penetrations by extending the base sheet or one ply of felt beyond the edge of the membrane field plies. After all overlying field plies or insulation are in place, the extended ply is turned back onto the membrane and adhered. The envelope is intended to prevent bitumen seepage from the edge of the membrane.
a continuous membrane edge seal formed at the perimeter and at penetrations by folding the base sheet or ply over the plies above and securing it to the top of the membrane. The envelope prevents bitumen seepage from the edge of the membrane.
The fabric part of the balloon that contains the air.
a continuous felt fold formed by wrapping and securing a portion of a base felt back up and over the felt plies above it. The envelope is intended to prevent bitumen seepage from the edge of the membrane.